Yes the vin should be on the back of the block right below the headthe guy wants 6k for it. I was going to offer 5k and try to stick to that price. but i was thinking he would do 5.5k for it. is the vin staped on the block?
Take a mirror, flashlight and piece of 120 grit sandpaper
You need to lay on the shock tower brace but you can see it with the mirror
Look for the HO specific parts
carb
valve covers are there
exhaust manifolds
distibutor
HO motor, complete 4 speed , 391 N case posi
ram air prices are WAY down 1400.00 for a good one
If it is a match and all the correct stuff it there.
Start at 4500 but I would have 6 in my pocket
good luck